Priming device for gas-engines.



A. O. SARGENT. PRIMING DEVICE FOR GAS ENGINES.

APPLICATION FILED JULY 22, 1908.

Patented Nov. 21, 1911.

,lvlllllll rin rnn srn'rns PATENT orricn ALLAN C. SARG-ENT, OF WES'IFORD, IIIASSACHUSE'ITS.

PRIMING DEVICE FOR GAS-ENGINES.

Specification of Letters Patent.

Application filed July 22, 1908;

To all whom it may concern:

Be it known that I, ALLAN C. SARonN'r, a citizen of the United States, residing at lVestford, in the county of Middlesex and State of Massachusetts, have invented a new and useful Priming Device for Gas Engines, of which the following is a specification.

This invention relates to a device for automatically priming gas engine cylinders.

In using automobilegas engines it is the custom to raise the bonnet and inject an indefinite quantity of gasolene from a can into the cylinders through the relief cocks, opening and closing the same one at a'time in order to start the engine with as little cranking as possible. This is troublesome and takes considerabletime and does not always work as the amount of gasolene supplied to each cylinder may not be right.

The principal objects of this invention are to providemeans whereby this priming can be done from the dash in a simple and convenient manner without involving the necessity of handling a can and without requiring special attention being given to each of the relief cocks; to provide a simple and inexpensive mechanism for accom lishing this result; to provide means where y the compression in the cylinders may be relieved so Mas to permit the gasolene to flow into them;

to provide receptacles for directing the gasolene into the cylinders having means whereby "the amount of gasolene in each one will be equalized; to provide a convenient means whereby the receptacles can be filled simultaneously from a stationary reservoir; to provide certain improved features of con struction for accomplishing these results.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying sheet of drawings, in which Figure 1 is an elevation-of a portion of a four-cylinder gas engine showing how this invention may be applied thereto; Fig. 2 is a transverse sectional view of the gasolene reservoir, pump, and cup shown in Fig. 1; and Figs. 3, 4, and 5 are sectional views of the cup or receptacle for feeding the cyl inders showing the relief cocks in three different positions.

Preferably located on the dash when the invention is to be applied to an automobile, is a gasolene reservoir 10 having an outlet 11 provided with a removable'plug 12 whereby the outlet may be cleaned. In a projection 13 in which these parts are located is screwed'a removable bottom plug 14 having a passage communicating with the outlet,

.and provided with a ball-valve 15 and a pin is provided with a removable air-tight cover 27 held thereto by a coupling 270 which has an inlet opening 28 communicating with the tube 25. These inlet openings are located in projections 29 which extend down toward the bottom of the cup, and as the incoming gasolene will seal the bottom of this inlet opening the amount of gasolene in each cup will tend to be equalized and the compres sion of the air above the liquid in all the cups will be substantially uniform. Each cup or receptacle is provided with an air outlet passage 30 which communicates with its engine cylinder 31 through a relief valve 32. Each relief valve is provided with a passage which permits the compression in the cylinders to be relieved as the valves are turned from the position shown in Fig. 3 to that shown in Fig. 4, the casing of each valve having a perforation 33 for communicating with the passage in the valve for this purose. p When the valve is turned to the position shown in Fig. 5, the cup or receptacle communicates directly with the'cylinder, and the pressure having been relieved, the gasolene will flow in. In order to admit the gasolene in the cups to the cylinders simultaneously, and also to relieve the compression automatically before the cylinders are put into communication with the cups, each relief valve is provided with an arm 35, and these arms are connected with a sliding rod 36 having a handle 37 projecting through the dash into a positionadjacent to the pump.-

The operation of the device will be obvi- I ous. First the pump piston is operated to fill the several receptacles 26 with gasolene with the valves in normal position as shown in Fig. 3,.and then the handle 37 is pulled to bring the valves to the position shown in Fig. 4: to relieve the compression and then the handle is pulled still farther to bring the valves to the position shown in Fig. 5 and to open communication between the cups and cylinder. It is found in practice that when the cocks are placed in the position shown in Figs. 1 and 3 after the engine has been primed in this manner and when the spark is switched on the engine will usually start without requiring any cranking. By removing the coupling 250 and unscrewing the coupling 270 the cups may be got at for adjustment or removal.

While I have illustrated and described a preferred embodiment of the invention, I am aware that many modifications may be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details shown, but

lVhat I do claim is:

1. The combination with a gas engine having a plurality of cylinders, of a receptacle connected with each cylinder for receiving liquid fuelhaving a closed airspace above the level of the fuel, means whereby each receptacle is-supplied with substantially the same quantity of fuel, and means for simultaneously relieving the compression in all the cylinders and thereafter simultaneously connecting each cylinder with its receptacle to introduce the fuel into the cylinder.

2. The combination with a gas engine having a plurality of cylinders, of a receptacle connected with each cylinder'for receiving liquid fuel, means for simultaneously connecting each cylinder with its receptacle to introduce a fixed quantity of fuel into each of the cylinders, and means for equalizing the amount of fluid therein comprising an inlet tube projecting from the tOPIlOWIIWHIClly into the liquidfuel.

3. The combination with a gas engine having a plurality of cylinders, of a receptacle connected with each cylinder for receiving liquid fuel, means for simultaneously relieving the compression in eachcylindcr and thereafter simultaneously connecting each cylinder with its. receptacle to introduce the fuel into the cylinder, and means 'for partially filling said receptacles and equalizing the amount of fuel therein.

4. The combination with a gas engine having a plurality of cylinders,.of a plurality of cups, one connected with each cylinder, a cap for each cup having an inlet projecting downwardly into the interior of the cup, and means for introducing fuel through said inlets.

5. The combination with a gas engine,

' of a cup connected with the cylinder thereofand having a removable air tight cap pro vided with an inlet projecting downwardly into the cup and opening below the top, thereof, and means for connecting said inlet with a source of supply of liquid fuel.

6. A device of the class described, comprising an explosion engine having a cylinder, a primer for said cylinder'for supplying rich explosive to said cylinder when starting, means for operating said primer, said primer consisting of a valve havingv means for establishin communication between the cylinder an the atmosphere, and.

,between said cylinder portand a supply of explosive fluid and between said cylinder port and the atmosphere.

8. A device of the class described, comprising an explosion engine, a primer for said engine having a valve, said valve having a port leading to the atmosphere, a port leading to the cylinder and a port leading to a supply of explosive, the movable ortion of said valve having intercommunftca ing ducts for effecting communication batween said cylinder port and a supply oi explosive fluld and between said cylindt port and the atmosphere, and a valve rod and crank to operate the movable member of said valve.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

ALLAN C. SARGENT.

lVitnesses OSBORN II. OILLEY, FRED W. SWAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

